motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-08 10:13:56 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

qed: Handle failure for potentially large allocations

Browse source 
Some code in the block layer makes potentially huge allocations. Failure
is not completely unexpected there, so avoid aborting qemu and handle
out-of-memory situations gracefully.

This patch addresses the allocations in the qed block driver.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>
This commit is contained in:
Kevin Wolf 2014-05-20 13:39:57 +02:00
parent de82815db1
commit 4f4896db5f
2 changed files with 10 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

6
block/qed.c
View file

@ -1240,7 +1240,11 @@ static void qed_aio_write_inplace(QEDAIOCB *acb, uint64_t offset, size_t len)
struct iovec *iov = acb->qiov->iov;
if (!iov->iov_base) {
iov->iov_base = qemu_blockalign(acb->common.bs, iov->iov_len);
iov->iov_base = qemu_try_blockalign(acb->common.bs, iov->iov_len);
if (iov->iov_base == NULL) {
qed_aio_complete(acb, -ENOMEM);
return;
}
memset(iov->iov_base, 0, iov->iov_len);
}
}